[Ifeffit] Issue with Compatibility between versions of Athena

Hello, I have recently downloaded Athena and was sending a project file to a colleague who uses an older version. When I sent it, I checked 'Backwards compatible project file', then saved the project and closed Athena, then sent the file. I had selected some normalization parameters as follows: [image: Inline image 2] When he opened the file, most of the parameters were the same, except the window type (changed from 'Hanning' to 'kaiser-bessel'). Is there any reason for this? Any way to maintain the window function between versions? [image: Inline image 1] Thank you,